Apple tech said to contact arris, modam not working/slow speed 2.0 mbps! help

SOURCE: slow speed of data transfer 10 MBPS instead of 100 MBPS

the switch which ur pc is connected might have been set to 10 mbps ...if the switch is managable cisco switch try changing the port setting to 100mbps full duplex

SOURCE: The wireless works but speed varies quite dramaticly

You don't talk about the laptop you're using or the type of wireless card it has... It can be several issues including the wireless capabilities of your laptop, the need for a firmware upgrade on your router and tweaking the wireless settings. I would go to the Linksys forums http://forums.linksysbycisco.com/linksys/board?board.id=Wireless_Routers and post your issue with as much detail about your laptop and current router settings as possible. The users on this forum can definitely help you.

SOURCE: very slow in my dell laptop

it's probably a mixture of the wireless card router and browser. If you like mac then why not see if their safari browser is better than internet explorer. Mac is going to work better than windows because it's components are well matched

SOURCE: slow internet at 120 Kbps but fast connection at 54 Mbps Why

54 Mbps is the speed between your computer and your wireless router. The .8 Mbps is the speed of your connection between the router and the internet. You should call your ISP and ask what your speeds should be; there could be something wrong on their end or your modem might be malfunctioning. It's also possible that your WiFi connection itself has a weak signal. That can be corrected by moving the router and the computer closer together, or getting a signal relay and putting it between them.

SOURCE: Compatibility of wireless router to desk top computer modum

You can easily check your internet speed by checking it online via tis website, http://www.ip-details.com/ . It helped me to check my PC's internet speed in it.